Home / 3,319.88-4,580.34-1,921.64

Finding the Fourth Proportional to 3,319.88, 4,580.34 and 1,921.64

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Solution

The fourth proportional to 3,319.88, 4,580.34 and 1,921.64 is: 2,651.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.88 : 4,580.34 = 1,921.64 : x
  2. Step 2: Convert to fraction form
    3,319.88/4,580.34 = 1,921.64/x
  3. Step 3: Cross multiply
    3,319.88x = 4,580.34 × 1,921.64
  4. Step 4: Simplify right side
    3,319.88x = 8,801,764.56
  5. Step 5: Solve for x
    x = 8,801,764.56/3,319.88
  6. Step 6: Final answer
    x = 2,651.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.